Keep building with Echo

Choose Echo Infra to start building

Echo Infra keeps your projects, build sandboxes, and verification running. Bring your AI provider keys and pay your provider directly.

How it works

From an idea to software you can review.

Echo runs a pipeline, not a conversation. It plans the work, builds it with several agents at once, and refuses to release a preview it has not watched run in a browser. Here is what each stage actually produces.

Start building Read the deep dive

01 / The pipeline

Three stages. Each one exists because the alternative costs more.

Plan first, because changing a route graph is a message while changing an implemented feature is a rebuild. Build in parallel, because the work is separable. Verify before release, because the person who finds a defect is always more expensive than the machine that finds it.

  1. Stage 01

    Plan

    Echo turns your brief into a technical blueprint: the routes the application exposes, the tables it needs and the contracts between them.

    • Requirements are extracted from the brief, including what you explicitly left out.
    • The route graph, data model and API contracts are written before any file is edited.
    • You can stop here, read it, and change it — the cheapest possible moment to correct the direction.
  2. Stage 02

    Build

    Specialist agents implement the application in parallel, working from the plan and editing separate parts of the codebase.

    • One worker leads the interface, others handle state, data access and server routes.
    • Because the workers own different files and share one plan, they do not overwrite each other.
    • Every modification is recorded in a legible activity trail you can read.
  3. Stage 03

    Verify

    The project is compiled, requested and rendered in an isolated browser sandbox before the preview is released to you.

    • A strict TypeScript check runs first, so type errors never reach a preview.
    • Routes are requested against the running app, and a headless browser renders the result.
    • Failures feed back into the build as specific instructions, and the run is repaired and repeated.

02 / The workspace

Everything the build did, in one place.

You are not asked to trust a summary. The workspace shows the plan, the conversation, the diffs and the running preview, so a follow-up instruction can be precise instead of hopeful.

Build conversation

The running record of the build: what the agents decided, what they changed and why.

Plan card

The architecture the run is working from, so you always know what the build believes it is doing.

Diff viewer

File-by-file changes between builds. Review what moved before you approve the next step.

Live preview

A preview when available, with verification results shown separately.

03 / The iteration loop

One change, then look. Then the next change.

The fastest way to waste an afternoon is to ask for a redesign, then three features, then a "more modern" layout, and then wonder why nothing works. Each message changes the context the next one is answered in. Echo\'s loop is designed for the opposite habit.

  1. Make one request

    Use the vocabulary of the app: “the jobs list should be sortable by date and filterable by crew” beats “improve the dashboard”.

  2. Look at the preview and the diff

    Check what actually changed, not just the summary of what changed.

  3. Confirm nothing regressed

    The activity trail makes “did my last change break the invoice screen?” a question you answer by reading.

  4. Only then ask for the next thing

    Short loops keep the build cheap to correct and the history legible.

04 / Shipping

Yours to run, host and keep.

A finished build is a standard React and Next.js TypeScript project. Echo exports it as a clean ZIP and can push it to GitHub, GitLab, Bitbucket or Gitea. You can also hand a prepared build to a hosting provider you have connected — but the provider makes the final decision, and the code never depends on it.

  • Export the full source — a ZIP archive of the project, including the dependencies it declared.
  • Push to a repository — connect a source-control provider and push straight from the workspace.
  • Publish — configure environment variables and custom domains, run the Production Check, and publish.
  • Hand it to a team — the code is ordinary source, so it can go into CI and keep shipping long after the build conversation is over.

Run the pipeline on your own brief.

Describe an application, review the plan, watch it build, and click through the result. Free to start.

Start building See every feature